code: def test_dataset_metadata(self):
      meta = datasets.dataset_metadata("taxi_rides")
      assert "description" in meta
      assert "headers" in meta
      assert "url" not in meta
  
file_path: gmaps/gmaps/datasets/tests/test_datasets.py
imports: import unittest
  import pytest
  from ..None import datasets
label_desc: Use image node_id 4 for calling the TestDatasets obj's underlying member method code with example usage: obj.test_dataset_metadata() without return types